Engine gurus!

I just finished a SIG Rascal 40 and used an OS 46 LA engine. The problem I seem to be having is when I point the nose up to test the air bleed, the RPM always increases. If I point the nose down, the engine will stop. Doing this at full throttle, up is fine, down shuts down the motor. I have opened up the air bleed to a whopping 7 turns out from closed and it still acts the same. It seems unaffected by any change in the air bleed.

Throttle response is fine from idle to WOT. If I leave it idle for long the engine will quit as well. I dont have it to low, its a mix issue for sure. I have about 3 tanks of gas through it so far and it keep acting the same. I would like ot fly but as-is I am worried if I dive or loop under power I will dead stick. I am not new at this and have 4 other planes that work just fine. I am just missing something here. Are there any known issued with a LA engine and running inverted?h

Any ideas? The only different thing is that I have the needle valve off the motor and screwed to the firewall so the needle can be turned from the bottom of the plane. I dont see how that could so it but you never know.

Any help would be great. I want to get this bird in the sky!

Ryan